Etiology
– Injury
•Acute MI, pericardiotomy/post MI
•Mediastinal irradiation
– Infection
•Virus (influenza, coxsackievirus), bacteria, tuberculosis, fungus or parasite
– Connective-tissue Dz
•Rheumatoid arthritis, lupus erythematosis
– Metabolic disorder (uremia)
– Idiopathic condition
Imaging finding
CT/MR
– Thickened pericardium with smooth margin
– Intense early enhancement
– Variable quantity of effusion
– With/without constriction
Chronic: irregular thickening with calcification
